Interpolated swath bathymetry collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center surrounding the nearshore of the Elizabeth Islands, MA, 2010 (ei_2hm_fill, ESRI grd)

These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center (WHCMSC). Initiated in 2003, the primary objective of this program is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of seafloor geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes due to natural or human impacts. The project is focused on the inshore waters of coastal Massachusetts, primarily in water depths of 2-30 meters. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (<http://woodshole.er.usgs.gov/project-pages/coastal_mass/>). The data collected in this study area located around the western extent of the Elizabeth Islands includes high resolution bathymetry, acoustic-backscatter intensity, seismic-reflection, and navigation data. These data were collected during a nearshore cruise in September 2010 onboard the R/V Rafael using the following equipment: an SEA Ltd SwathPlus interferometric sonar (234 kHz), Klein 3000 dual frequency sidescan sonar, an Edgetech 424 chirp subbottom profiling system, and 4 GPS antennae. More information about the cruise conducted as part of the project: Geologic Mapping of the Seafloor Offshore of Massachusetts can be found on the Woods Hole Coastal and Marine Science Center Field Activity webpage:
<http://quashnet.er.usgs.gov/data/2010/10003/>

本数据集由马萨诸塞州海岸带管理办公室（Massachusetts Office of Coastal Zone Management, CZM）与美国地质调查局（U.S. Geological Survey, USGS）海岸与海洋地质项目、伍兹霍尔海岸与海洋科学中心（Woods Hole Coastal and Marine Science Center, WHCMSC）通过合作协议联合采集。本项目于2003年启动，核心目标是构建区域地质框架信息，以服务于海岸与海洋资源管理工作。精准的海底地质数据与地图是保护鱼类栖息地、划定海洋资源范围、评估自然或人类活动引发的环境变化的首要关键步骤。本项目聚焦马萨诸塞州沿海近岸水域，作业水深主要介于2至30米之间。本制图合作项目所采集的数据已通过一系列美国地质调查局公开文件报告发布，相关链接为<http://woodshole.er.usgs.gov/project-pages/coastal_mass/>。本次数据采集的研究区域位于伊丽莎白群岛西侧周边海域，涵盖高分辨率水深测量（bathymetry）、声后向散射强度、地震反射及导航数据。该批数据采集于2010年9月的近岸航次，作业平台为"拉斐尔号"研究船（R/V Rafael），所用设备包括：SEA有限公司的SwathPlus干涉式声呐（234 kHz）、Klein 3000双频侧扫声呐、Edgetech 424型啁啾式浅地层剖面系统，以及4台GPS天线。有关本项目航次的更多信息，可在伍兹霍尔海岸与海洋科学中心野外活动网页上查阅题为《马萨诸塞州近海海底地质制图》的内容，链接为<http://quashnet.er.usgs.gov/data/2010/10003/>。